A career in ‘buy-side’ makes one smart enough to know the ‘sell side’. Well, that’s what the conventional investing mantra states. Back in 2001, when Sahil Dharia started his career at UBS Investment Bank in New York, he was gradually getting a hang of three crucial things: Number crunching, data slicing and in-depth market analysis. “I was on the buy-side for two years,” he recounts.